Here's what getting £578 million wiped off your company's value looks like

The trading company, which lets people place bets on stock and currency markets through something called a contract for difference, has had £578 million ($896 million) wiped off it's value in just the last week after a hellish 66% share price fall in five days.

Plus500 was valued by the market at around £862 million ($1.33 billion) last Friday. By the time markets closed in London yesterday it was worth £284 million ($440 million).

It's been a very bad week for Plus 500 customers and investors Google Finance

The company's share price collapse began on Monday when word began to emerge that some customers' trading accounts had been frozen.

That didn't do much to help things and when Plus500 resumed trading the share price kept falling, ending the day down 35%.

The company may not have even hit the bottom yet. CEO Gal Haber told investors to expect an update at next Wednesday's annual general meeting. Depending on what exactly is in that update we could see shares fall even lower.